/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.dtstack.chunjun.connector.elasticsearch;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

public class KeyExtractor {
    public static String getDocId(
            List<String> idFieldNames, Map<String, Object> dataMap, String keyDelimiter) {
        String docId = "";
        if (null != idFieldNames) {
            docId =
                    idFieldNames.stream()
                            .map(idFiledName -> dataMap.get(idFiledName).toString())
                            .collect(Collectors.joining(keyDelimiter));
        }
        return docId;
    }
}
